Derrick Rose Case -- Potential Jurors Questioned ... Thoughts On Group Sex?

Who's your favorite basketball team ... and how do you feel about group sex?

Those were questions potential jurors in the Derrick Rose rape case were asked Tuesday -- as lawyers on both sides gear up for the $21 million trial.

Questionnaires were handed out to the jury pool in the L.A. courtroom -- in an effort to flush out any possible hidden biases.

Rose and his friends are accused of gang raping a woman in her L.A. apartment back in 2013 -- though the NBA superstar claims the group sex was consensual.

But it wasn't a smooth start for Team Rose -- with his attorney voicing his frustrations to the judge about the racial composition of the jury pool ... which contained only 2 black people.

Rose's lawyer also groused about the fact 15 of the first 27 potential jurors were Hispanic -- which was concerning for Rose because his accuser is Hispanic.

The judge said there was nothing he could do about it.